mount_procfs.c revision 1.16 
1/*	$NetBSD: mount_procfs.c,v 1.16 2005/01/31 05:19:19 erh Exp $	*/
2
3/*
4 * Copyright (c) 1992, 1993, 1994
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Jan-Simon Pendry.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35/*
36 * Copyright (c) 1990, 1992, 1993 Jan-Simon Pendry
37 *
38 * This code is derived from software contributed to Berkeley by
39 * Jan-Simon Pendry.
40 *
41 * Redistribution and use in source and binary forms, with or without
42 * modification, are permitted provided that the following conditions
43 * are met:
44 * 1. Redistributions of source code must retain the above copyright
45 *    notice, this list of conditions and the following disclaimer.
46 * 2. Redistributions in binary form must reproduce the above copyright
47 *    notice, this list of conditions and the following disclaimer in the
48 *    documentation and/or other materials provided with the distribution.
49 * 3. All advertising materials mentioning features or use of this software
50 *    must display the following acknowledgement:
51 *	This product includes software developed by the University of
52 *	California, Berkeley and its contributors.
53 * 4. Neither the name of the University nor the names of its contributors
54 *    may be used to endorse or promote products derived from this software
55 *    without specific prior written permission.
56 *
57 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
58 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
59 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
60 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
61 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
62 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
63 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
64 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
65 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
66 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
67 * SUCH DAMAGE.
68 */
69
70#include <sys/cdefs.h>
71#ifndef lint
72__COPYRIGHT("@(#) Copyright (c) 1992, 1993, 1994\n\
73	The Regents of the University of California.  All rights reserved.\n");
74#endif /* not lint */
75
76#ifndef lint
77#if 0
78static char sccsid[] = "@(#)mount_procfs.c	8.4 (Berkeley) 4/26/95";
79#else
80__RCSID("$NetBSD: mount_procfs.c,v 1.16 2005/01/31 05:19:19 erh Exp $");
81#endif
82#endif /* not lint */
83
84#include <sys/param.h>
85#include <sys/mount.h>
86
87#include <err.h>
88#include <unistd.h>
89#include <stdio.h>
90#include <stdlib.h>
91#include <string.h>
92#include <util.h>
93
94#include <miscfs/procfs/procfs.h>
95
96#include <mntopts.h>
97
98static const struct mntopt mopts[] = {
99	MOPT_STDOPTS,
100	MOPT_GETARGS,
101	{ "linux", 0, PROCFSMNT_LINUXCOMPAT, 1},
102	{ NULL }
103};
104
105int	main __P((int, char *[]));
106int	mount_procfs __P((int argc, char **argv));
107static void	usage __P((void));
108
109#ifndef MOUNT_NOMAIN
110int
111main(argc, argv)
112	int argc;
113	char **argv;
114{
115	return mount_procfs(argc, argv);
116}
117#endif
118
119int
120mount_procfs(argc, argv)
121	int argc;
122	char *argv[];
123{
124	int ch, mntflags, altflags;
125	struct procfs_args args;
126	char canon_dir[MAXPATHLEN];
127
128	mntflags = altflags = 0;
129	while ((ch = getopt(argc, argv, "o:")) != -1)
130		switch (ch) {
131		case 'o':
132			getmntopts(optarg, mopts, &mntflags, &altflags);
133			break;
134		case '?':
135		default:
136			usage();
137		}
138	argc -= optind;
139	argv += optind;
140
141	if (argc != 2)
142		usage();
143
144	if (realpath(argv[1], canon_dir) == NULL)   /* Check mounton path */
145		err(1, "realpath %s", argv[1]);
146	if (strncmp(argv[1], canon_dir, MAXPATHLEN)) {
147		warnx("\"%s\" is a relative path.", argv[1]);
148		warnx("using \"%s\" instead.", canon_dir);
149	}
150
151	args.version = PROCFS_ARGSVERSION;
152	args.flags = altflags;
153
154	if (mount(MOUNT_PROCFS, canon_dir, mntflags, &args))
155		err(1, "procfs on %s", canon_dir);
156	if (mntflags & MNT_GETARGS) {
157		char buf[1024];
158		(void)snprintb(buf, sizeof(buf), PROCFSMNT_BITS, args.flags);
159		printf("version=%d, flags=%s\n", args.version, buf);
160	}
161	exit(0);
162}
163
164static void
165usage()
166{
167	(void)fprintf(stderr,
168		"usage: mount_procfs [-o options] /proc mount_point\n");
169	exit(1);
170}
171